TheNiSi JetMag Pro Prolock Luminous 77mm-82MAG Magnetic Adaptor Ring adapts lenses with a 77mm front filter thread to the JetMag Pro 82MAG magnetic filter system. It is an upgraded adapter ring built for photographers who work in the dark: an enlarged ProLock locking area holds filters more securely, while glow-in-the-dark lock markings make the ring faster and easier to fit, align, and lock in low light.
